/* -------------------------------------------------------------
   style.css
   토큰: 색상/타이포/여백을 :root 변수로 모아서 유지보수 쉽게 구성
------------------------------------------------------------- */

:root {
  --bg: #f7f6f2;
  --paper: #ffffff;
  --ink: #1e2a32;
  --muted: #63696f;
  --accent: #2f6f5e;
  --accent-dark: #204d41;
  --highlight: #f2b134;
  --highlight-bg: #fdf1d6;
  --line: #dedbd2;
  --radius: 10px;
  --max-width: 880px;

  --font-display: "Noto Serif KR", serif;
  --font-body: "Pretendard", -apple-system, BlinkMacSystemFont, "Malgun Gothic",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-dark);
}

img {
  max-width: 100%;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- 헤더 ---------- */

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
  gap: 16px;
}

.site-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--accent-dark);
}

/* ---------- 히어로 / 시간표 도구 ---------- */

.hero {
  padding: 40px 0 28px;
}

.hero-eyebrow {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0 0 6px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  margin: 0 0 20px;
  line-height: 1.35;
}

#school-name {
  color: var(--accent-dark);
}

.tt-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.tt-controls select,
.tt-controls button {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 9px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
}

.tt-controls button {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  cursor: pointer;
}

.tt-controls button:hover {
  background: var(--accent-dark);
}

.tt-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  overflow-x: auto;
}

.tt-status {
  color: var(--muted);
  text-align: center;
  padding: 30px 0;
  margin: 0;
}

.tt-status--error {
  color: #a13a2b;
}

.tt-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}

.tt-table th,
.tt-table td {
  border: 1px solid var(--line);
  padding: 10px 8px;
  text-align: center;
  vertical-align: middle;
}

.tt-table thead th {
  background: #f1efe8;
  font-weight: 600;
}

.tt-table .tt-corner {
  background: #f1efe8;
}

.tt-table tbody th {
  font-weight: 600;
  color: var(--muted);
  background: #fbfaf7;
}

.tt-subject {
  display: block;
  font-weight: 600;
}

.tt-teacher {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 2px;
}

.tt-changed {
  background: var(--highlight-bg);
  position: relative;
}

.tt-changed::after {
  content: "변경";
  position: absolute;
  top: 2px;
  right: 4px;
  font-size: 0.62rem;
  color: var(--highlight);
  font-weight: 700;
}

.tt-legend {
  margin: 14px 2px 0;
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.tt-swatch {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: var(--highlight-bg);
  border: 1px solid var(--highlight);
}

/* ---------- 학교 검색 ---------- */

.hero-desc {
  color: var(--muted);
  margin: 0 0 20px;
}

.search-form {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.search-form input {
  flex: 1;
  font-family: inherit;
  font-size: 0.95rem;
  padding: 10px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.search-form button {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 10px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

.search-form button:hover {
  background: var(--accent-dark);
}

.search-table {
  width: 100%;
  border-collapse: collapse;
}

.search-table th,
.search-table td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--line);
}

.search-table thead th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.85rem;
}

.school-row {
  cursor: pointer;
}

.school-row:hover,
.school-row:focus {
  background: var(--highlight-bg);
}

.school-kind {
  display: inline-block;
  margin-left: 8px;
  font-size: 0.78rem;
  color: var(--muted);
}

.link-btn {
  display: inline-block;
  background: none;
  border: none;
  color: var(--accent-dark);
  font-family: inherit;
  font-size: 0.88rem;
  padding: 0;
  margin: -10px 0 20px;
  cursor: pointer;
  text-decoration: underline;
}

/* ---------- 시간표 정보 테이블 (학교명/검색/일자/학급) ---------- */

.tt-info-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 18px;
  background: var(--paper);
  border: 1px solid var(--line);
}

.tt-info-table th,
.tt-info-table td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  font-size: 0.92rem;
}

.tt-info-table th {
  background: #f1efe8;
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
  width: 1%;
}

.tt-class-cell {
  display: flex;
  gap: 8px;
}

.tt-info-table select,
.tt-info-table button {
  font-family: inherit;
  font-size: 0.92rem;
  padding: 7px 10px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--paper);
}

.tt-info-table button {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  cursor: pointer;
}

.tt-info-table button:hover {
  background: var(--accent-dark);
}

.tt-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 14px;
}

.tt-nav h1 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin: 0;
  min-width: 220px;
  text-align: center;
}

.tt-nav button {
  font-size: 1rem;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--paper);
  cursor: pointer;
  color: var(--accent-dark);
}

.tt-nav button:hover {
  background: var(--highlight-bg);
}

.tt-updated {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

/* ---------- 콘텐츠 섹션 (기능/사용법/FAQ/팁) ---------- */

.content-section {
  padding: 36px 0;
  border-top: 1px solid var(--line);
}

.content-section h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin: 0 0 18px;
}

.steps {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  padding: 0;
  margin: 0;
  list-style: none;
}

.steps li {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.steps li strong {
  display: block;
  font-family: var(--font-display);
  margin-bottom: 6px;
}

.feature-list {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  padding: 0;
  margin: 0;
  list-style: none;
}

.feature-list li {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 14px;
}

.feature-list li strong {
  display: block;
}

.feature-list li span {
  color: var(--muted);
  font-size: 0.92rem;
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  padding: 14px 4px;
  cursor: pointer;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after {
  content: "+";
  color: var(--muted);
  font-weight: 400;
}

.faq-item.is-open .faq-question::after {
  content: "–";
}

.faq-answer {
  display: none;
  padding: 0 4px 16px;
  color: var(--muted);
}

.faq-item.is-open .faq-answer {
  display: block;
}

.tip-list {
  padding-left: 20px;
  margin: 0;
}

.tip-list li {
  margin-bottom: 10px;
}

/* ---------- 정책 페이지 (소개/문의/개인정보) ---------- */

.policy-page .wrap {
  max-width: 720px;
}

.policy-page h1 {
  font-family: var(--font-display);
  font-size: 1.8rem;
}

.policy-page h2 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin-top: 32px;
}

.policy-page table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
}

.policy-page table th,
.policy-page table td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
  font-size: 0.92rem;
}

/* ---------- 푸터 ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 0.85rem;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}

.site-footer nav a {
  color: var(--muted);
  margin-right: 14px;
  text-decoration: none;
}

.site-footer nav a:hover {
  color: var(--accent-dark);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 접근성 ---------- */

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

@media (max-width: 560px) {
  .site-header .wrap {
    flex-direction: column;
    align-items: flex-start;
  }
}